摘要:
中间包内钢液流动行为是影响后续铸坯凝固质量的重要因素,因此,设计合理的中间包控流装置显得十分必要。以某钢厂新设计的七流“T”形中间包为研究对象,根据“T”形中间包结构特点和七流中间包的几何尺寸设计了四种不同的控流装置,并通过数值模拟的方法对各控流条件下中间包内的速度场、温度场和夹杂物去除效果进行系统分析,发现采用控流方案C时,各流间流动均衡性较好;中间包内最大温差和各流出口极限温差分别为9℃和0.4℃,温度非常均匀;同时,夹杂物去除率达89.12%,是适用于现场的一种理想控流方案。
Abstract:
Fluid flow behavior of molten steel in tundish is a key factor which can influence solidification of the subsequent casting blank.Therefore,it is very necessary to design suitable flow control devices for tundish.The present research is based on the seven-strand "T" shaped tundish.According to the characteristics of "T" shaped tundish and the geometry size of seven-strand tundish,four kinds of flow control devices were designed.Velocity field,temperature field and effect of inclusion removal with different flow control devices were analyzed by using numerical simulation method.The results show that with flow control device "C",the uniformity of flow between strands is better than others,and the maximum temperature difference in tundish and between strands is 9 ℃ and 0.4 ℃ respectively,which shows relatively satisfied temperature uniformity.Also,the removal rate of inclusion reaches 89.12%.Thus,flow control device "C" is a suitable scheme for on-site use.
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